Specific heat capacity Flashcards
1
Q
Definition of specific heat capacity
A
The amount of energy needed to raise the temperature of 1kg of a substance by 1 degrees celsius.
2
Q
Higher temperature = lower or higher specific heat capacity
A
lower
3
Q
Formula for specific heat capacity
what does each symbol represent
A
E = m x c x theta
E is energy transferred in Joules
m is mass in kg
c is a specific heat capacity
theta is the temperature change
4
Q
Work out energy.
m = 0.5kg
theta = 20 degrees
c = 390
A
3900J
5
Q
Greater heat capacity =
A
better ability to hold on to heat
6
Q
Workout mass
m = change in E/c x change in theta
Change in E=1000
Change in theta=2.5
C = 540
A
1000/ 2.5x540
1350/1000= 0.74kg
